地图数字化中图纸定向的若干问题探讨

On the Solution to Some Problems about Map Orientation in Map Digitization

以仿射变换为例详细讨论了定向点的分布、数量对变换系数的精度影响 ,所得出的结论对实际工作具有指导意义。

Taking affine transformation for example, the influence of distribution and number of orientation points on accuracy of transformation coefficients is discussed in detail in this paper, and the conclusions are helpful to practice.